CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 8,184	$ (3,814)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	11,423	11,577
Provision for bad debts	396	0
Stock-based compensation	752	643
Amortization of deferred financing costs	774	577
Interest income on interest rate swap	0	(357)
Deferred income taxes	937	(5,231)
Loss on sales of property and equipment	7	15
Changes in operating assets and liabilities:
Accounts receivable	5,576	5,773
Inventories	1,256	(3,503)
Prepaid expenses and other current assets	(1,645)	(2,414)
Accounts payable	(2,584)	421
Accrued expenses and other liabilities	(607)	(1,995)
Income taxes payable	447	125
Other assets and liabilities	(1,590)	(763)
Net cash provided by operating activities	23,326	1,054
Cash flows from investing activities:
Cash paid for property and equipment	(430)	(438)
Net cash used in investing activities	(430)	(438)
Cash flows from financing activities:
Repayment of long-term debt	(9,904)	(1,305)
Payment for redemption of convertible preferred stock	(5,330)	0
Payment of preferred dividends	(3,002)	0
Proceeds from long-term debt	0	1,070
Net cash used in financing activities	(18,236)	(235)
Effect of exchange rate changes on cash and cash equivalents and restricted cash	(1,822)	(1,369)
Net increase (decrease) in cash and cash equivalents and restricted cash	2,838	(988)
Cash and cash equivalents and restricted cash, beginning of period	50,030	29,817
Cash and cash equivalents and restricted cash, end of period	52,868	28,829
Cash paid for:
Cash paid for interest	5,012	6,600
Cash paid for income taxes	842	1,441
Supplemental schedule of non-cash investing and financing activities:
Accrued purchases of property and equipment	95	32
Reconciliation of cash and cash equivalents and restricted cash:
Total cash and cash equivalents and restricted cash	$ 52,868	$ 28,829